js实用的无间断滚动图效果(良好兼容性)

ul,li,img,td{font-size:12px;list-style-type:none;text-align:center;margin:0;padding:0;}
.demo{width:230px;margin-bottom:8px;height:172px;overflow:hidden;}
.demo ul{width:408px;clear:both;}
.demo li{width:102px;float:left;text-align:center;}
.demo img{margin-bottom:8px;}

function startmarquee(lh,speed,delay,index){
var o=document.getElementById("demo"+index);
var o_td=o.getElementsByTagName("td")[0];
var str=o_td.innerHTML;
var newtd=document.createElement("td");
newtd.innerHTML=str;
o_td.parentNode.appendChild(newtd);
var t;
var p=false;
o.Onmouseover=function(){p=true;}
o.Onmouseout=function() {p=false;}
function start(){
t=setInterval(Marquee,speed);
if(!p){o.scrollLeft += 3;}
}
function Marquee(){
if(o_td.offsetWidth-o.scrollLeft<=0)
o.scrollLeft-=o_td.offsetWidth;
else{
if(o.scrollLeft%lh!=0){
o.scrollLeft+= 3
}else{clearInterval(t); setTimeout(start,delay);}
}
}
setTimeout(start,delay);
}
startmarquee(102,1,1500,1);//图片间停式滚动
startmarquee(102,30,1,2);//图片不间断滚动